Deodorant fabric

ABSTRACT

A fabric contains a polyester fiber and a polyurethane elastic yarn that are excellent in deodorant function of sweat odor and the distinctive body odor of the elderly. The fabric is a combined fabric including a polyurethane elastic yarn and a cationic dyeable polyester fiber where a deodorant ratio of ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% both after washing 0 times and 10 times, also a mixing ratio of the polyurethane elastic yarn is from 5 wt. % to 30 wt. %, and a mass of 10 cm×10 cm is greater than or equal to 1 g.

TECHNICAL FIELD

This disclosure relates to a fabric combining a polyester fiber and apolyurethane elastic yarn excellent in deodorizing effects for sweatodor and the distinctive body odor of the elderly.

BACKGROUND

In recent years, stretch materials have been widely used in functionalinner wear and undergarments due to increasing health consciousness.Particularly, a material combining polyester fibers excellent infast-drying and durability has been preferred during the summer forinner wear and athletic use.

Needs for deodorant for sweat odor and distinctive body odor of theelderly are extremely high in these applications and, to provide suchfunction conventionally, functionalization has been proposed by apost-processing method (Japanese Unexamined Patent ApplicationPublication No. 2012-140731).

Also, a method incorporating a deodorant directly into the elasticfibers that provide elasticity has been proposed (Re-publication of PCTInternational Publication No. 2012-053401). Inorganic deodorants such asactive carbon, silver-containing zeolites, zeolite, zinc oxide fineparticles, and metal phosphates are used therefor. These inorganicdeodorants are excellent in weather resistance and chemical resistance,and also have an excellent characteristic in which acute oral toxicityis low. In addition, because heat resistance is high, the deodorizingeffects are not impaired even during the manufacturing or processing ofthe elastic fibers.

However, although a product with temporary deodorizing effects can beobtained by a post-processing method, there have been issues in that thetexture may be damaged by a binder that adheres a functional agent to anelastic fabric, productivity is decreased due to a long manufacturingprocess, and deodorizing effects are deteriorated by repeatedly washing.

Further, when attempting to demonstrate the deodorizing effects bycombining normal polyester fibers with elastic fibers incorporating adeodorant, the ratio of elastic fibers in the fabric (hereinafter, notedas the mixing ratio) must be significantly high and, therefore, therehave been issues in that desired texture and physical properties cannotbe obtained.

It could therefore be helpful to provide a fabric having elasticity withexcellent deodorizing effects for sweat odor and distinctive body odorof the elderly.

SUMMARY

We thus provide:

(1) A fabric containing a polyurethane elastic yarn and a cationicdyeable polyester fiber where a mass of 10 cm×10 cm is greater than orequal to 1 g, wherein the polyurethane elastic yarn has a deodorantratio of ammonia gas measured according to the detector tube methoddefined by Japan Textile Evaluation Technology Council for 0.15 g ofpolyurethane elastic yarn is greater than or equal to 40% both afterwashing 0 times and 10 times, and a mixing ratio of the polyurethaneelastic yarn is 5 to 30 wt. %.(2) The fabric according to (1) wherein a mixing ratio within the fabricof the cationic dyeable polyester fiber is greater than or equal to 40wt. %.(3) The fabric according to (1) or (2) is stained by the cationic dye.(4) The fabric according to any of (1) to (3), wherein the polyurethaneelastic yarn contains an inorganic deodorant in a range of 0.5 to 10 wt.%.

A fabric having elasticity with excellent deodorizing effects for sweatodor and distinctive body odor of the elderly can be obtained.Therefore, a garment using such fabric can have an excellent deodorizingeffect for sweat odor and distinctive body odor of the elderly.

DETAILED DESCRIPTION

Our fabrics will be described below in further detail.

We provide a fabric having a specific mass per unit area containingpolyurethane elastic yarn and having excellent deodorizing effects forsweat odor and distinctive body odor of the elderly by combiningcationic dyeable polyester fibers and polyurethane elastic yarn havingan ammonia gas deodorant ratio of greater than or equal to a specifiedvalue so that a mixing ratio of the polyurethane elastic yarn is in aspecified range within the fabric.

The fabric contains polyurethane elastic yarn and cationic dyeablepolyester fiber. The deodorizing effects effective for acetic acid gas,isovaleric acid, nonenal that are originally possessed by polyurethaneelastic yarn are obtained by containing the polyurethane elastic yarnwhere the mixing ratio within the fabric is 5 to 30 wt. %.

The deodorizing effect for ammonia gas is demonstrated by cationic dyeexhaustion seating by combining the cationic dyeable polyester fibers tobecome a fabric having deodorizing effects with good balance againstsweat odor and distinctive body odor of the elderly. It is preferredthat the mixing ratio of the cationic dyeable polyester fiber within afabric is greater than or equal to 40 wt. % to demonstrate thedeodorizing effect for ammonia gas, and it is preferred that the upperlimit is less than or equal to 95 wt. % from the viewpoint ofdemonstrating the deodorizing effects for acetic acid gas, isovalericacid, and nonenal. When a mixing ratio within the fabric of the cationicdyeable polyester fiber is 40 wt. % or less, the dyeing is preferred tobe performed with a cationic dye.

An amount of polyurethane elastic yarn and cationic dyeable polyesterfiber sufficient to demonstrate the deodorizing effects can be ensuredby having a weight of 10 cm×10 cm to be greater than or equal to 1 g.Further, from the viewpoint of feeling and texture as use in a garmentor the like, it is preferred that the weight of 10 cm×10 cm is less thanor equal to 7 g.

In the polyurethane elastic yarn, the deodorant ratio for ammonia gasmeasured according to the detector tube method defined by Japan TextileEvaluation Technology Council for 0.15 g of polyurethane elastic yarn isgreater than or equal to 40% for both after washing treatments of 0times and 10 times. By using such polyurethane elastic yarn in a rangeof 5 to 30 wt. % for the mixing ratio in a fabric, the deodorizingeffects originally possessed by the cationic dyeable polyester fiber forammonia gas are complemented and the deodorizing effects possessed bypolyurethane elastic yarn for acetic acid gas, isovaleric acid, andnonenal are fully demonstrated.

In the polyurethane elastic yarn, the deodorant ratio for ammonia gasmeasured according to the detector tube method defined by Japan TextileEvaluation Technology Council for 0.15 g of polyurethane elastic yarn isgreater than or equal to 40% for both after washing treatments of 0times and 10 times. The detector tube method defined by Japan TextileEvaluation Technology Council is a method of measuring in a prescribedsample how much ammonia gas is reduced in 2 hours, and the deodorantratio of ammonia gas obtained by applying this method to 0.15 g ofpolyurethane elastic yarn becomes an indicator of the deodorant ratio ofammonia gas contributed by the polyurethane yarn itself in the fabric.The method of obtaining the polyurethane elastic yarn having suchammonia gas deodorant ratio is not particularly limited. However, thosecontaining an inorganic deodorant having an ammonia gas deodorizingeffect may be preferably used. The deodorizing characteristic forammonia gas is allowed to be improved by containing an inorganicdeodorant having deodorizing effects for ammonia gas without obstructingthe deodorant power for acetic acid gas, nonenal gas, and isovalericacid gas.

For an inorganic deodorant, zirconium, titanium, aluminum, metallicphosphates composed of calcium, zinc containing silica or the like maybe used. Among them, at least one selected from a group composed ofzirconium phosphate, titanium phosphate, or dihydrogen aluminumtripolyphosphate having a layer structure is preferable to use for theobject of a deodorizing characteristic for ammonia, and particularlypreferred is a zirconium phosphate.

Further, the metallic phosphate such as zirconium phosphate, ispreferably one that does not carry a metallic ion such as a silver ionor copper ion for the object of a deodorizing characteristic forammonia.

The content amount of the inorganic deodorant is 0.5 to 10 wt. % withrespect to the total mass of the polyurethane elastic yarn. When thecontent of the inorganic deodorant is less than 0.5 wt. %, a sufficientammonia gas deodorizing characteristic may hardly be obtained when usingas a fabric. It is more preferable that the content is greater than orequal to 1.5 wt. %. Conversely, when the content exceeds 10 wt. %,deterioration of the elastic properties or increasing cost may occur. Itis more preferable that the content is less than or equal to 7.0 wt. %.When considering a balance between the deodorizing characteristics andphysical properties against ammonia gas to the cost, the content isparticularly preferable 1.5 to 5.0 wt. %.

Also, the inorganic deodorant is preferably powder having less than orequal to 3.0 μm of an average primary particle size from the viewpointof preventing the spinning solution clogging in the spinneret, and moreparticularly less than or equal to 1.5 μm. Further, when the averageprimary particle size is less than 0.05 μm, the cohesive force isincreased and causes difficulty in mixing uniformly in the spinningsolution and, therefore, the average primary particle size is preferredto be greater than or equal to 0.05 μm from the viewpoint ofdispersibility.

The polyurethane elastic yarn may contain a medical agent such as alight resistant agent, an antioxidant, a pigment or the like in additionto the inorganic deodorant. For example, hindered phenol based drugssuch as “Sumilizer” (registered trademark) GA-80 manufactured bySumitomo Chemical Co., Ltd. and BHT as a light resistance agent andantioxidant, benzotriazole system such as various “Tinuvins” (registeredtrademark) manufactured by Ciba Geigy, benzophenone-based drugs,phosphorus-based drugs such as “Sumilizer” (registered trademark) P-16manufactured by Sumitomo Chemical Co., Ltd., various hinderedamine-based drugs, various pigments such as iron oxide, titanium oxide,inorganic materials such as zinc oxide, cerium oxide, magnesium oxide,calcium carbonate, carbon black, fluorine-based or silicon-based resinpowders, metallic soaps such as magnesium stearate, lubricants such asmineral oil, various antistatic agents such as cerium oxide, betaine, orphosphoric acid are also preferred to be contained, and those arepreferably reacted with a polymer. Further, to increase durability forparticularly light and various nitric oxides, nitric oxide scavengerssuch as HN-150 manufactured by Japan Hydrazine Co., Ltd., thermaloxidation stabilizers such as “Sumilizer” (registered trademark) GA-80manufactured by Sumitomo Chemical Co., Ltd., light stabilizers such as“Sumisorb” (registered trademark) 300#622 are also preferably used.

The cationic dyeable polyester fiber used in our fabric will bedescribed below.

Normally, the cationic dyeable polyester fiber is a fiber obtained bycopolymerizing a compound containing a metallic sulfonate group in thepolyester molecular structure, and the definition herein is the same.Such cationic dyeable polyester fiber may be available in various typesin which a type of compound containing a metallic sulfonate group orthat in which the rate of copolymerization is different due toincreasing of staining properties, improvement of texture or the like.However, the cationic dyeable polyester fiber can be used without beingparticularly limited as long as the staining properties are exhibitedfor normal cationic dye.

The fabric preferably has a mixing ratio of the cationic dyeablepolyester fiber greater than or equal to 40 wt. % to demonstrate thedeodorizing effects with a proper balance, a mixing ratio of thepolyurethane elastic yarn greater than or equal to 5 wt. % and less than30 wt. %, and a mass of 10 cm×10 cm greater than or equal to 1 g. Whenthe condition described above is satisfied, a knitted fabric may be aregular polyester fiber or a combination of polyamide fiber, cotton orthe like. The knitted fabric also is not particularly limited as long asthe condition above is satisfied, and the knitted fabric may be made inany method such as circular knit, warp knit, tricot, raschel knit, orused as a covering finished yarn.

Further, it is preferred that the fabric is stained by cationic dye. Thecationic dye in such case is not particularly limited even though thereare a variety of types such as polymethins, azos, azamethines,anthraquinones, thiazoles, or the like, and a dye that is generallycommercially available can be used under normal conditions. Furthermore,it is preferred that the cationic dye contains a counter ion, and acalboxylate anion, a sulfonate anion, a sulfate ester anion, phosphateester anion or the like to demonstrate fabric deodorizing effects,particularly preferred is a sulfonate anion. In addition, to improvetexture and to provide other functions after the staining process,softening finish, antibacterial treatment, water absorption treatment,water repellent treatment, antistatic treatment or the like may beprovided properly.

It is preferred that the fabric is a knitted fabric. To demonstrate thedeodorizing effects with a proper balance, a knitted fabric ispreferable where a mixing ratio of the cationic dyeable polyester fiberis greater than or equal to 40 wt. %, a mixing ratio of the polyurethaneelastic yarn is greater than or equal to 5 wt. % and less than 30 wt. %,and a mass of 10 cm×10 cm is greater than or equal to 1 g, and as longas satisfying the configuration, it may be a combination of a regularpolyester fiber, polyamide fiber, cotton or the like other than thepolyurethane elastic yarn or cationic dyeable polyester fiber.

The polyurethane elastic yarn will be described below (hereinafter, thepolyurethane configuring the polyurethane elastic yarn will beabbreviated as polyurethane).

The polyurethane may be anything and not particularly limited as long asa polymer-diol and a diisocyanate are the starting materials. Thesynthesis method also is not particularly limited. That is, for example,polyurethane-urea composed of polymer diol, diisocyanate, and lowmolecular weight diamine, or polyurethane urethane composed of polymerdiol, diisocyanate, and low molecular weight diol may be used. Also,polyurethane-urea in which a compound having a hydroxyl group and anamino group as chain extenders may be used. The polyurethane obtained byusing isocyanate, glycol of a tri- or greater polyfunctionality, or thelike without obstructing the advantageous effects, is also preferred foruse herein.

For the polymer diol, polyethers, polyester diols, polycarbonate diolsor the like are preferred. A polyether diol is particularly preferred tobe used from the viewpoint of providing flexibility and elasticity toyarn.

For the polyether diol, it is preferred that, for example, polyethyleneoxide, polyethylene glycol, polyethylene glycol derivatives,polypropylene glycol, polytetramethylene ether glycol (hereinafter,abbreviated as PTMG), modified PTMG (hereinafter, abbreviated as3M-PTMG) that is a copolymer of tetrahydrofuran (hereinafter,abbreviated as THF) and 3-methyl tetrahydrofuran, a modified PTMG thatis a copolymer of THF and 2,3-dimethyl THF, polyol having a side chainon both sides disclosed in U.S. Pat. No. 2,615,131 or the like, a randomcopolymer where THG and ethylene oxide and/or propylene oxide areirregularly arranged, or the like is used. These polyether diols may beof one kind or two or more kinds mixed or copolymerized.

Also, from the viewpoint of obtaining abrasion resistance and lightresistance as the polyurethane elastic yarn, it is preferred thatbutylene adipate, polycaprolactone diol, polyester diols such aspolyester polyol having a side chain disclosed in JP Unexamined PatentApplication Publication No. S61-26612 and the like, or polycarbonatediols disclosed in JP Unexamined Patent Application Publication No.H02-289616 or the like is used.

In addition, such polymer diols may be used solely, or two or more typesmay be mixed or copolymerized.

With the molecular weight of the polymer diol, a number averagemolecular weight is preferably 1000 to 8000, and more preferably 1500 to6000 from the viewpoint of obtaining elasticity, strength, heatresistance and the like. Using the polyol within the range of the numberaverage molecular weight, an elastic yarn that is excellent inelasticity, strength, strength of elastic recovery, and heat resistancecan be obtained easily. The number average molecular weight is measuredby GPC, and converted by polystyrene (the same manner is applied forother ingredients and polymers below).

Next, for the diisocyanate, an aromatic diisocyanate such asdiphenylmethane diisocyanate (hereinafter, abbreviated as MDI), tolylenediisocyanate, 1,4-diisocyanate benzene, xylylene diisocyanate,2,6-naphthalene diisocyanate, or the like, is particularly suitable tosynthesize polyurethane for heat resistance and high strength.Furthermore, for an alicyclic diisocyanate, for example, methylenebis(cyclohexyl isocyanate) (hereinafter, abbreviated as H12MDI), isophoronediisocyanate, methyl cyclohexane 2,4-diisocyanate, methyl cyclohexane2,6-diisocyanate, cyclohexane 1,4-diisocyanate, hexahydroxylenediisocyanate, hexahydrotolylene diisocyanate, octahydro 1,5-naphthalenediisocyanate or the like is preferred. The aliphatic diisocyanate can beused effectively particularly when suppressing the yellow discolorationof the polyurethane elastic yarn. In addition, these diisocyanates maybe used solely or in conjunction with two or more.

Next, it is preferable that at least one type of chain extender is usedwhen synthesizing the polyurethane from among low molecular weight diolsand low molecular weight diamines in which the molecular weight is lessthan or equal to 300. It may even have a hydroxyl group and an aminogroup such as ethanolamine.

Preferred low molecular weight diamines include, for example,ethylenediamine, 1,2-propanediamine, 1,3-propanediamine,hexamethylenediamine, p-phenylenediamine, p-xylylenediamine,m-xylylenediamine, p,p′-methylenedianiline, 1,3-cyclohexyldiamine,hexahydromethaphenilenediamine, 2-methyl pentamethylenediamine,bis(4-aminophenyl) phosphine oxide or the like. It is preferable thatone more of these are used. Ethylenediamine is particularly preferred.By using ethylenediamine, a yarn with excellent elasticity, strength ofelastic recovery, and heat resistance can be obtained easily. Triaminecompounds such as, for example, diethylene triamine that can form across-linked structure may be added to these chain extenders to anextent not to lose the efficacy.

Further, for the low molecular weight diol having a molecular weightless than or equal to 300, ethylene glycol, 1, 3-propanediol, 1,4-butanediol, bis hydroxyethoxybenzene, bis hydroxy ethyleneterephthalate, 1-methyl-1, 2-ethanediol, or the like is a typicalexample. It is preferable that one or more types are used from amongthese. Ethylene glycol, 1, 3-propanediol, and 1, 4-butanediol areparticularly preferred. Use of these enables the heat resistance to befurther increased as polyurethane of a diol extension, and a higherstrength yarn can be obtained.

Also, the molecular weight of the polyurethanes is preferably 30000 to150000 as number average molecular weights from the viewpoint ofobtaining fibers with durability and higher strengths.

For the polyurethane, it is also preferable that one or more types ofterminal sequestrants are mixed. Preferred terminal sequestrants includemonoamines such as dimethylamine, diisopropylamine, ethylmethylamine,diethylamine, methylpropylamine, isopropylmethylamine, diisopropylamine,butylmethylamine, isobutylmethylamine, isopentylmethylamine,dibutylamine, diamylamine or the like, monols such as ethanol, propanol,butanol, isopropanol, allyl alcohol, cyclopentanol or the like,monoisocyanates such as phenylisocyanate or the like.

Next, a method of manufacturing the polyurethane elastic yarn will bedescribed below.

The polyurethane elastic yarn is spun by containing an inorganicdeodorant (for example, a metal phosphate such as zirconium phosphate)and a quaternary ammonium salt antibacterial or the like if necessaryinto the spinning solution including polyurethane obtained by using apolymer diol and a diisocyanate as starting materials. It is preferredthat the polyurethane solution is prepared in advance and the inorganicdeodorant is then added thereto from the standpoint of stabilizing thepolymerization. Further, the manufacturing method for the polyurethanethat is a solute may be either a melt polymerization process or asolution polymerization process, and may even be another method. Ofthem, the solution polymerization process is more preferred. In asolution polymerization process, foreign matter such as a gel are rarelygenerated in the polyurethane, spinning is easier, and a polyurethaneelastic yarn with a low fineness is easy to obtain.

Furthermore, the polyurethane of particular preferable includes thosethat are synthesized by using PTMG where a number average molecularweight is 1500 to 6000 as the polymer diol, MDI as the diisocyanate, andat least one of 1, 2-prooane diamine, 1, 3-propane diamine,hexamethylene diamine, or ethylenediamine as the chain extender.

The polyurethane can be obtained by synthesizing using the ingredientsdescribed above in a solvent, for example, N, N-dimethylacetamide(hereinafter, abbreviated as DMAc), N, N-dimethylformamide (hereinafter,abbreviated as DMF), dimethyl sulfoxide (hereinafter, abbreviated asDMSO), N-methyl-2-pyrrolidone (hereinafter, abbreviated as NMP), or asolvent having the above as the primary ingredient. Particularlypreferred methods which may be used are, for example, the so-calledone-shot process in which the polyurethane is made by putting allmaterials into such solvent, dissolving them, and performing thereaction by heating the solution to a suitable temperature, or a methodin which the polyurethane is made by first melting and reacting thepolymer diol and diisocyanate and then dissolving the reaction productin a solvent and reacting the chain extender described above or thelike.

When using a diol for the chain extender, it is preferred to adjust themelting point of the high-temperature side from 200 to 260° C. from thestandpoint of obtaining excellent heat resistance. A representativemethod may be accomplished by controlling the polymer diol, MDI, type ofdiol and ratio. When the molecular weight of the polymer diol is low,polyurethane with a high-temperature melting point can be obtained byrelatively increasing the ratio of MDI. In the same manner, when themolecular weight of the diol is low, polyurethane with ahigh-temperature melting point can be obtained by relatively reducingthe ratio of the polymer diol.

When a number average molecular weight of the polymer diol is 1800 orgreater, to have the high-temperature side melting point to be 200° C.or higher, it is preferable to proceed the polymerization in the ratio(number of moles of MDI)/(Number of moles of polymer diol)=1.5 orgreater.

It is preferred to contain an inorganic deodorant such as a metalphosphate in such polyurethane solution. When the inorganic deodorant isadded into the polyurethane solution, any method may be used. As arepresentative method, various means can be used such as a method usinga static mixer, a method by stirring, a method by a Homo Mixer, a methodusing a twin-screw extruder or the like.

For the polyurethane, to improve the deodorizing effects for ammoniagas, an inorganic deodorant is contained in the polyurethane elasticyarn in a specified range. However, it is preferred to disperse theinorganic deodorant evenly into the polyurethane spinning solution priorto spinning, and the inorganic deodorant above is preferably added tothe polyurethane spinning solution that is a solvent of DMF, DMAc or thelike, and then stirred and mixed to disperse it evenly. Morespecifically, it is preferable that the inorganic deodorant is preparedto be a dispersion solution where DMF, DMA or the like is dispersed inadvance, and the dispersion solution is mixed in the polyurethanespinning solution. It is preferred to use the same solvent as thepolyurethane solution for the dispersion medium used in the dispersionsolution of the inorganic deodorant from the standpoint of performingadding evenly to the polyurethane solution. Also, when adding theinorganic deodorant to the polyurethane solution, for example, a medicalagent such as a light resistance agent, an oxidation inhibitor, or apigment may be added at the same time.

The polyurethane yarn can be obtained by spooling the spinning solutionconfigured as described above, for example, by dry spinning, wetspinning or melt spinning. Among them, the dry spinning is preferredfrom the standpoint of stability in spinning in all finenesses from veryfine to thick yarn.

The fineness and cross-sectional shape of the polyurethane elastic yarnhas no particular limitation. For example, the cross-sectional shape ofthe yarn may be a circular shape, or a flat shape.

The dry spinning method is also not particularly limited, and thespinning method may be suitably selected according to the spinningconditions suitable to the desired characteristics and the spinningequipment.

EXAMPLES

Examples of our fabrics will be described in further detail.

Washing Method

Washing was conducted according to the washing method manual establishedby the Japanese Association for the Functional Evaluation of Textiles.That is, a household electric washing machine defined in washing method103 in appendix table 1 of JIS L0217:1995 was used, washing liquid wasprepared where 40 ml of the JAFET standard detergent (manufactured byJapanese Association for the Functional Evaluation of Textiles) inrelation to the water 30 liters at 40 C.° was dissolved, and a washingmaterial that was a 1 kg sample was placed in the washing liquid. Then,the washing material was washed for 5 minutes, span for dewatering,rinsed for two minutes, spun for dewatering, rinsed for 2 minutes, andspun for dewatering in this order, and this process was considered asone washing. The washing 10 times means repeating 10 times this seriesof operations, and washing 50 times means repeating 50 times this seriesof operations.

Deodorizing Effects of Polyurethane Elastic Yarn

A deodorizing test was conducted based on the standards of DeodorantProcessed Textiles Certification Criteria (published by: Japan TextileEvaluation Technology Council, product authentication department, issuedon Sep. 1, 2002), and the deodorizing effect evaluation of odorouscomponents was conducted by an equipment test as follows.

Detector Tube Method

1. The sample (polyurethane elastic yarn 0.15 g) was placed into aTedlar bag.2. A required amount of test gas (ammonia gas: 100 ppm, acetic acid gas:30 ppm) was injected, and the concentration of the gas remaining aftertwo hours (ppm) was measured by the detector tube corresponding to theingredient (manufactured by GASTEC Co.) to be the residual gasconcentration of the sample test. Note that, the gas filling amount was3 L, and the diluent gas was dry air or nitrogen gas.3. The same evaluation was conducted without placing the sample in theTedlar bag to be the residual gas concentration of the blank test.4. The evaluation was made according to the following formula tocalculate the deodorizing ratio:

$\begin{matrix}{{{Deodorizing}\mspace{14mu} {Ratio}\mspace{14mu} (\%)} = {\frac{\begin{pmatrix}{{{Residual}\mspace{14mu} {gas}\mspace{14mu} {concentration}\mspace{14mu} {of}\mspace{14mu} {blank}\mspace{14mu} {test}} -} \\{{residual}\mspace{14mu} {gas}\mspace{14mu} {concentration}\mspace{14mu} {of}\mspace{14mu} {sample}\mspace{14mu} {test}}\end{pmatrix}100}{{Residual}\mspace{14mu} {gas}\mspace{14mu} {concentration}\mspace{14mu} {of}\mspace{14mu} {blank}\mspace{14mu} {test}}.}} & {{Formula}\mspace{14mu} 1}\end{matrix}$

Note that, the measurement values were obtained as the average values ofn=3.

Deodorizing Effects of Fabric

As a sample, the deodorizing effect evaluation for odorous componentswas conducted in the same manner as the “Deodorizing Effects ofPolyurethane Elastic Yarn” except using a 10 cm×10 cm fabric in place of0.15 g of the polyurethane elastic yarn to calculate the deodorizingratio.

The fabric deodorant effect is preferably 70% or greater in both ammoniaand acetic acid in washing durability after washing 10 times, andfurther preferably 70% in both ammonia and acetic acid after washing 50times.

Example 1

DMAc solution (35 wt. %) of polyurethane-urea polymer composed ofethylenediamine, MDI, and PTMG having a number average molecular weightof 1800, and diethylamine as the terminal sequestrant was prepared.Next, as the antioxidant, a polyurethane solution (DuPont Co.“Methacrol”™ 2462 D) yielded by the reaction of t-butyl diethanolamineand methylene-bis-(4-cyclohexylisocyanate), and a condensation polymerof p-cresol and divinylbenzene (DuPont Co. “Methacrol”™ 2390 D) weremixed in a weight ratio of 2 to 1 to prepare an antioxidant DMAcsolution. Ninety-six parts by weight of the polyurethane urea polymerDMAc solution and four parts by weight of the antioxidant solution weremixed to make the polymer solution A1. Next, the zirconium phosphatedeodorant “Kesumon”™ NS-10 (Toagosei Co., average primary particle size0.9 μm) was dispersed in DMAc by a homomixer to make the zirconiumphosphate dispersion B1 (35 wt. %). A ratio of 99 wt. % of the polymersolutions A1 and 2 wt. % of the zirconium phosphate dispersion B1 wereuniformly mixed to make the spinning solution C1. This was dry-spun at aspeed of 720 m/min. with a speed ratio of the godet rollers and thewinder of 1.3, and 200 g of a wound polyurethane elastic yarn 22decitex, 2 filament with a zirconium phosphate content of 2 wt. % wasobtained.

The results after evaluating the ammonia gas deodorizing effects with0.15 g of the obtained polyurethane elastic yarn are shown in Table 1.

Next, a circulation knit was made by a typical method for a fabric byusing the polyurethane elastic yarn and cationic dyeable polyester fiber(type WFOF: manufactured by Toray Co, 84 decitex, 72 filament).

The dyeing process was performed by using the obtained circular knitfabric as follows to obtain the dyed knitted fabric in which the mixingratio of the polyurethane elastic yarn is 9 wt. %, and the mass of 10cm×10 cm was 1.3 g.

(1) Refining Process: An aqueous solution of 2 g/L “Sunmol” BL650(anionic surfactant produced by Nikka Chemical Co., Ltd.) was preparedand treated at 80° C. for 20 minutes.(2) Presetting: Treated at 190° C.×1 minute at the tentering rate 30%.(3) Dyeing: Using a dye Kayacryl Black FB-ED (a cationic dyemanufactured by Nippon Kayaku Co., Ltd.), and dyed for 60 minutes at125° C. at a concentration of 8% owf. % owf shows a percentage of themass of dyes with respect to the fiber mass in the dyebath.

The deodorizing effects were measured on the knitted fabric after thepreset treatment in (2), and each knitted fabric after dyeing in (3).The evaluation results are shown in Table 2.

Comparative Example 1

A circular knitted fabric was prepared using the polyurethane elasticyarn used in Example 1, and dying treatment was conducted according tothe following method replacing the cationic polyurethane elastic yarn(Tetoron, Toray Co., 84 decitex and 72 filament) with a normal polyesterfiber (Tetoron, Toray (Inc.), 84 decitex and 72 filament).

(1) Refining Process: An aqueous solution of 2 g/L “Sunmol” BL650(anionic surfactant produced by Nikka Chemical Co., Ltd.) was preparedand treated at 80° C. for 20 minutes.(2) Presetting: Treated at 190° C.×1 minute at the tentering rate 30%.(3) Dyeing: Using a dye Dianix Tuxde Black F (trade name, manufacturedby DyStar Japan Ltd., and dyed for 60 minutes at 125° C. at aconcentration of 10% owf.(4) Reduction Cleaning: Treated at 80° C. for 20 minutes in a bathcontaining hydrosulfite 3.0 g/L, sodium hydroxide 1.5 g/L, Bisnol US-10(trade name, manufactured by Ipposha Oil Industries, Co., Ltd.) 1.5 g/L.

Deodorizing effects were measured on the knitted fabric after the presettreatment in (2), and each knitted fabric after dyeing treatment in (4)was completed.

Each evaluation result is shown in Tables 1 and 2.

Example 2

Instead of the zirconium phosphate dispersion B1, dihydrogen aluminumtripolyphosphate deodorant “K-FRESH” manufactured by TAYCA Co.(registered trademark) #100P (average primary particle size 1.0 μm) wasdispersed in DMAc by a homomixer to make a dihydrogen aluminumtripolyphosphate dispersion B2 (35 wt. %).

A ratio of 96 wt. % of the polymer solutions A1 and 4 wt. % ofdihydrogen aluminum tripolyphosphate dispersion B2 were uniformly mixedto make the spinning solution C2, this was dry-spun in the same manneras Example 1, and 200 g of a wound polyurethane elastic yarn 22 decitex,2 filament thread with the dihydrogen aluminum tripolyphosphate contentof 4 wt. % was obtained. The deodorizing effects evaluation for ammoniagas was conducted on the obtained polyurethane elastic yarn in the samemanner as Example 1. A circular knitted fabric and the knitted fabricdyed thereof were then prepared as a fabric in the same manner asExample 1, and the evaluation was conducted on these.

Each evaluation result is shown in Tables 1 and 2.

Example 3

Instead of the zirconium phosphate dispersion B1, an inorganic deodorant“Shu-Clenase” (registered trademark) KD-211 manufactured by RasaIndustries, Ltd. was dispersed in DMAc by a homomixer to make adispersion B3 (35 wt. %).

A ratio of 96 wt. % of the polymer solutions A1 and 4 wt. % ofdispersion liquid B3 were uniformly mixed to make the spinning solutionC3, this was dry-spun in the same manner as Example 1, and 200 g of awound polyurethane elastic yarn 22 decitex, 2 filament thread with theinorganic deodorant content of 4 wt. % was obtained. The deodorizingeffects evaluation for ammonia gas was conducted on the obtainedpolyurethane elastic yarn in the same manner as Example 1. A circularknitted fabric and a knitted fabric dyed thereof were then prepared as afabric in the same manner as Example 1, and the evaluation was conductedon these.

Each evaluation result is shown in Tables 1 and 2.

Example 4

The polymer solutions A1 and B1 were uniformly mixed at 99 wt. % and 1wt. % to make the spinning solution C4. This was dry-spun in the samemanner as Example 1, and 200 g of a wound polyurethane elastic yarn 22decitex, 2 filament with the inorganic deodorant content of 1 wt. % wasobtained. The deodorizing effects evaluation for ammonia gas wasconducted on the obtained polyurethane elastic yarn in the same manneras Example 1. A circular knitted fabric and a knitted fabric dyedthereof were then prepared as a fabric in the same manner as Example 1,and the evaluation was conducted on these.

Each evaluation result is shown in Tables 1 and 2.

Example 5

The spinning solution C1 was dry-spun at a speed of 710 m/min. with aspeed ratio of the godet rollers and the winder of 1.21, and 350 g of awound polyurethane elastic yarn 44 decitex, 4 filament, with a inorganicdeodorant content of 2 wt. % was obtained. The deodorizing effectsevaluation for ammonia gas was conducted on the obtained polyurethaneelastic yarn in the same manner as Example 1. A two way tricot was thenknitted as a fabric by a normal method using a cationic dyeablepolyester fiber (type FS92: manufactured by Toray Co.) (mixing ratio76%), and using the polyurethane elastic yarn (mixing rate 24%) of 44decitex for a bag. The dyeing process was performed by using theobtained two way tricot as follows to obtain the dyed knitted fabric inwhich the mixing ratio of the polyurethane elastic yarn is 24 wt. %, andthe mass of 10 cm×10 cm was 1.88 g.

(1) Refining Process: 2 g/L of anionic surfactant “Sunmol” (registeredtrademark) BL650 (manufactured by Nikka Chemical Co., Ltd.) and 1500 ppmof EDTA-based sequestrant “Acromar” (registered trademark) DH 700(manufactured by Nagase chemteX Co.) were added to soft water of totalhardness 10 ppm to prepare a solution as the treatment solution, andtreated at 80° C. for 20 minutes by using the treatment solution.(2) Presetting: Treated at 190° C.×1 minute at the tentering rate 30%.(3) Dyeing: Using a cationic dye “Kayacryl Black” (registered trademark)FB-ED (manufactured by Nippon Kayaku Co., Ltd.), and dyed for 60 minutesat 125° C. at a concentration of 8% owf.

The deodorizing effects were measured on the knitted fabric after thepreset treatment in (2), and each knitted fabric after dyeing in (3).

Each evaluation result is shown in Tables 1 and 2.

Example 6

The cationic dye used in Example 1 was altered to 1,3-dimethyl-1H-benzo(d)imidazole-2(3H-one and 2-amino-3-methyl benzoliumchloride, and a dyeing fabric was made in the same matter as Example 1.

The evaluation results are shown in Table 2.

Example 7

The cationic dye used in Example 1 was altered to 1,3-dimethyl-1H-benzo(d)imidazol-2(3H)-one and 2-amino-3-methylbenzoliumdimethyl sulfate, and a dyeing fabric was made in the same matter asExample 1.

The evaluation results are shown in Table 2.

Example 8

A knitted fabric that was a stained circular knitted fabric was preparedas the fabric in the same manner as Example 1 except using a fiber at aratio of 40:51 of the cationic dyeable polyester fiber and a regularpolyester fiber (type W20F: manufactured by Toray Co., 84 decitex 72filament) instead of the cationic dyeable polyester fiber (type WFOF:manufactured by Toray Co., 84 decitex 72 filament) used in Example 1,and the evaluation was conducted.

Each evaluation result is shown in Tables 1 and 2.

Example 9

A circular knitted fabric and a knitted fabric dyed thereof wereprepared as the fabric in the same manner as Example 1 except using afiber at a ratio of 30:61 of the cationic dyeable polyester fiber and aregular polyester fiber (type W20F: manufactured by Toray Co., 84decitex 72 filament) instead of the cationic dyeable polyester fiber(type WFOF: manufactured by Toray Co., 84 decitex 72 filament) used inExample 1, and the evaluation was conducted.

Each evaluation result is shown in Tables 1 and 2.

Example 10

A circular knitted fabric and the knitted fabric dyed thereof wereprepared as a fabric in the same manner as Example 8 except dyeingtreatment was conducted in the same manner as in Comparative Example 1,and the evaluation was conducted on these.

Each evaluation result is shown in Tables 1 and 2.

Comparative Example 2

The polymer solution A1 was dry-spun in the same manner as Example 1,and 200 g of a wound polyurethane elastic yarn 22 decitex, 2 filamentwas obtained. Evaluation of the deodorizing effects for ammonia gas wasconducted on the obtained polyurethane elastic yarn in the same manneras Example 1. A circular knitted fabric and the knitted fabric dyedthereof were then prepared as a fabric in the same manner as Example 1,and the evaluation was conducted on these.

Each evaluation result is shown in Tables 1 and 2.

Comparative Example 3

A ratio of 99.5 wt. % of the polymer solutions A1 and 0.5 wt. % of thedispersion B3 was uniformly mixed to make the spinning solution C5. Thiswas dry-spun in the same manner as Example 1, and 200 g of a woundpolyurethane elastic yarn 22 decitex, 2 filament with the inorganicdeodorant content of 0.5 wt. % was obtained. The deodorizing effectsevaluation for ammonia gas was conducted on the obtained polyurethaneelastic yarn in the same manner as Example 1. A circular knitted fabricand the knitted fabric dyed thereof were then prepared as a fabric inthe same manner as Example 1, and the evaluation was conducted on these.

Each evaluation result is shown in Tables 1 and 2.

Comparative Example 4

The polymer solution A1 was dry-spun in the same manner as Example 5,and 350 g of a wound polyurethane elastic yarn 44 decitex, 4 filamentwas obtained. The deodorizing effects evaluation for ammonia gas wasconducted on the obtained polyurethane elastic yarn in the same manneras Example 1. A two way tricot and the dyed fabric thereof were thenprepared as a fabric in the same manner as Example 5, and the evaluationwas conducted on these.

Each evaluation result is shown in Tables 1 and 2.

Comparative Example 5

This spinning solution C3 was dry-spun in the same manner as Example 5,and 350 of a wound polyurethane elastic yarn 44 decitex, 4 filament withthe inorganic deodorant content of 4 wt. % was obtained. Evaluation ofthe deodorizing effects for ammonia gas was conducted on the obtainedpolyurethane elastic yarn in the same manner as Example 1. Next, aregular polyester fiber (type S962): manufactured by Toray Co.) (mixingratio 76%) was used and a two way tricot was knitted by a normal methodas a fabric by using the polyurethane elastic yarn of 44 decitex Imixing(ratio 24%) for a bag. The dyeing process was performed as follows byusing the obtained two way tricot to obtain the dyed knitted fabric inwhich the mixing ratio of the polyurethane elastic yarn is 24 wt. %, andthe mass of 10 cm×10 cm was 1.86 g.

(1) Refining Process: 2 g/L of anionic surfactant “Sunmol” (registeredtrademark) BL650 (manufactured by Nikka Chemical Co., Ltd.) and 1500 ppmof EDTA-based sequestrant “Acromar” (registered trademark) DH 700(manufactured by Nagase chemteX Co.) were added to soft water of totalhardness 10 ppm to prepare a solution as a treatment solution, andtreated at 80° C. for 20 minutes by using the treatment solution.(2) Presetting: Treated at 190° C.×1 minute at the tentering rate 30%.(3) Dyeing: Using a dye Dianix Tuxde Black F (tradename, manufactured byDyStar Japan Ltd., and dyed for 60 minutes at 125° C. at a concentrationof 10% owf.(4) Reduction Cleaning: Treated at 80° C. for 20 minutes in a bathcontaining hydrosulfite 3.0 g/L, sodium hydroxide 1.5 g/L, Bisnol US-10(trade name, manufactured by Ipposha Oil Industries, Co., Ltd.) 1.5 g/L.

The deodorizing effects were measured on the knitted fabric after thepreset treatment in (2), and each knitted fabric after dyeing treatmentin (4) was completed.

Each evaluation result is shown in Tables 1 and 2.

Comparative Example 6

A circular knitted fabric and the knitted fabric dyed thereof wereprepared as a fabric in the same manner as comparative example 3 exceptchanging the inorganic deodorant used in the comparative example 3 to0.3 wt. %, and the evaluation was conducted on these.

Each evaluation result is shown in Tables 1 and 2.

TABLE 1 Cationic Polystyrene Basic Yarn Pyretic Mixing Polyester(deodorizing Ratio Fiber Deodorant Containent ratio %) in Mixing OtherFiber Content

Fabric Ratio (%) Mixing Ratio (%) Ingredient (wt. %) Tlers liter itTlers (%) in Fabric Fabric Type in Fabric Example 1

phosphate 2 75 77 9.0 91.0 — — Example 2

3 62 56 9.1 90.9 — —

Example 3

of 4 46 43 9.0 91.0 — — silicane

and

Example 4

phosphate 1 46 49 9.0 91.0 — — Example 5

phosphate 2 76 77 24.0  76.0 — — Example 6 Same as Example 1 Example 7Same as Example 1 Example 8

phosphate 2 75 77 9.0 40.0 regular 51.0 polyester fiber Example 9

phosphate 2 75 77 9.0 20.0 regular 51.0 polyester fiber Example 10

phosphate 2 75 77 9.0 40.0 regular 51.0 polyester fiber ComparativeExample 1 Same as Example 1 9.2 — regular 99.8 polyester fiberComparative Example 2 None None  3  2 9.1 90.0 — — Comparative Example 3

of   0.5 35 35 9.3 90.7 — — silicane

and

Comparative Example 4 None None  3  4 24.0  76.0 — — Comparative Example5

of 4 44 42 24.0  — regular 75.0 silicane

and

polyester fiber Comparative Example 6

of   0.3 20 19 9.3 90.7 — — silicane

and

Fabric Mass (g) of 10 cm × 10 cm Type of Dye: Name of Dye Example 1 1.30cationic dye:

Black PB-ED Example 2 1.32 cationic dye:

Black PB-ED Example 3 1.28 cationic dye:

Black PB-ED Example 4 1.33 cationic dye:

Black PB-ED Example 5 1.88 cationic dye:

Black PB-ED Example 6 Same as Example 1 cationic dye:1,3-Dimethy-1H-benze(d)Inidanol-2-(3N)-one and 2-Amino- 3-

chloride Example 7 Same as Example 1 cationic dye:1,3-Dimethy-1H-benze(d)Inidanol-2-(3N)- one and 2-Amino-3-

chloride Example 8 1.30 cationic dye:

Black PB-ED Example 9 1.30 disperse dye: Disair Turde Black F Example 101.30 disperse dye: Disair Turde Black F Comparative Example 1 1.29disperse dye: Disair Turde Black F Comparative Example 2 1.31 cationicdye:

Black PB-ED Comparative Example 3 1.35 cationic dye:

Black PB-ED Comparative Example 4 1.86 cationic dye:

Black PB-ED Comparative Example 5 1.86 disperse dye: Disair Turde BlackF Comparative Example 6 1.36 cationic dye:

Black PB-ED

indicates data missing or illegible when filed

TABLE 2 Deodorizing Effects of Fabric After Presetting Treatment AmmoniaGas Acetic Acid Gas After Dyeing Deodorant Effects Deodorant EffectsAmmonia Gas Deodorant Acetic Acid Gas Deodorant (deodorant ratio %)(deodorant ratio %) Effects (deodorant ratio %) Effects(deodorant ratio%) Wash After Wash Wash After Wash Wash After Wash After Wash Wash AfterWash After Wash 0 Times 10 Times 0 Times 10 Times 0 Times 10 Times 50Times 0 Times 10 Times 50 Times Example 1 86 88 89 90 93 95 91 90 92 80Example 2 84 83 88 88 90 89 84 90 88 89 Example 3 82 81 86 87 86 86 8287 88 85 Example 4 83 83 82 84 90 89 79 84 86 81 Example 5 91 92 98 9896 97 96 91 90 80 Example 6 Same as Example 1 90 88 85 90 90 89 Example7 Same as Example 1 97 97 84 91 92 88 Example 8 74 74 80 75 90 85 86 9086 84 Example 9 70 71 72 70 75 71 69 75 84 78 Example 10 74 74 77 75 7372 60 74 73 67 Comparative Example 1 55 52 72 71 54 53 44 71 70 67Comparative Example 2 56 53 85 86 55 54 43 86 86 68 Comparative Example3 60 62 86 87 67 68 50 85 86 68 Comparative Example 4 45 44 86 87 51 5338 85 86 76 Comparative Example 5 61 59 79 78 60 58 46 79 79 65Comparative Example 6 48 49 83 84 52 51 48 81 82 15

1-4. (canceled)
 5. A fabric comprising a polyurethane elastic yarn and a cationic dyeable polyester fiber where a mass of 10 cm×10 cm is greater than or equal to 1 g, wherein the polyurethane elastic yarn has a deodorant ratio of ammonia gas measured according to the detector tube method defined by Japan Textile Evaluation Technology Council for 0.15 g of polyurethane elastic yarn is greater than or equal to 40% both after washing 0 times and 10 times, and a mixing ratio of the polyurethane elastic yarn is 5 to 30 wt. %.
 6. The fabric according to claim 5, wherein a mixing ratio within the fabric of the cationic dyeable polyester fiber is greater than or equal to 40 wt. %.
 7. The fabric according to claim 5 is stained by the cationic dye.
 8. The fabric according to claim 5, wherein the polyurethane elastic yarn contains an inorganic deodorant in a range from 0.5 wt. % to 10 wt. %.
 9. The fabric according to claim 6 is stained by the cationic dye.
 10. The fabric according to claim 6, wherein the polyurethane elastic yarn contains an inorganic deodorant in a range from 0.5 wt. % to 10 wt. %.
 11. The fabric according to claim 7, wherein the polyurethane elastic yarn contains an inorganic deodorant in a range from 0.5 wt. % to 10 wt. %. 